Improvement in steam vacuum-pumps



j JAMES M. MGREHEAD.

Steam Vauum Pumps-l.

Patented Jan.30, 1872.

UNITED STATES PATENT QFFIGE.

JAMES M. MOREHEAD, OF BROOKLYN, NEW YORK.

IMPROVEMENT IN STEAM VACUUM-PUMPS.

Specification forming part of Letters Patent No. 123,117, dated January30, 1872. .l

SPECIFICATION.

I, J AMES M. MOREIIEAD, of the city of Brooklyn, county of Kings, Stateoi' New York, have invented certain Improvements in Steam Vacuum-Pumps,of which the I'ollowin g is a full description, reference being had tothe accompanying drawing, which makes a part of the specification.

In carrying out my invention, I take a cylinder and line it withlaminated wood or other suitable material, for resisting the water.Through the center of the cylinder is a hollow tube or rod, and uponthis tube is placed a iioat, to the bottom of which is attached a smallwire rod, running through the tube to the top of cylinder. On the endoi' this wire is a nut with valve attached. The object of the float,when the cylinder is iilled with water, is to rise upward and lift withit at the same time, by means of the wire rod, the valve which is seatedon the top of the steam-port in the upper end of cylinder, therebyallowing a free passage of steam from the boiler through steam-port intothe cylinder. I also have a tube for holding water, which is'open at thetop, and connected by a small injection-pipe to the cylinder.Placedinside of this open tube is a iioating valve. The object of thisvalve is to prevent the air from passing into the cylinder when theatmospheric pressure forces a jet of water in, and also to prevent thewater from being' forced in when the pressure is on the cylinder.Attached to the lower end of this cylinder by means of the hollow tube,is a diaphragm. This is so constructed that the pressure of theatmosphere upon the diaphragm causes it to force the valve which isplaced on the underside of the steam-port, up tightly against it. Thecylinder is provided with a suction-pipe and a discharge-pipe, forfilling it with water and discharging it.

Figure l is a perspective front view of the improved steam vacuum-pump.Fig. 2 is sec tional view of same. A is the cylinder of the pump; B, afloat affixed to and working upon the hollow rod or tube C; d is a wirerod attached to the float B, and passing through the tube C and thecylinder A. On the top of the wire rod d is a nut or valve, e, which isseated on the upper part of the steam-port g. D is a dischargepipe, andH a tube, open at the top for holding water. Within this tube H isplaced the iioating valve b. K is an injectiou-pipe, and connects thetube H with cylinder A. At the bottom ofthe cylinder is the diaphragm L,which is connected to the valve f by means of the tube C. Nis asuction-pipe, for filling the cylinder A with water. h is used for samepurpose. n is a foot-valve.

In operating my improved steam vacuumpump, I iirst till the cylinder Awith water by means of the tube h. When the cylinder A is full, theiioat B rises upward on the hollow rod or tube C, carrying with it atthe same time the wire rod d, which lifts the "alvc e from its seat onthe steam-port, thereby allowing the steam from the boiler a freepassage through steam-port g into cylinder A, (shown in Fig. 2 by arrow1,) The pressure ofthe steam forces the water out ofthe cylinder Athrough the discharge-pipe D, shown by arrow 5, until the i'loat Blowers down, bringing with it the valve e, which closes the steamport g.Now, at this point, the pipe H being open at the top and iilled withwater, the atmospheric pressure forces a jet of water through theinjection-pipe K, (as shown in Fig. 2 by arrows 2 and 3,) into thecylinder A, which produces a vacuum. At the same time the iloating-valveb in tube-H passes down and closes the opening J, thereby preventing theair from being taken into the cylinder A, and the atmospheric pressureupon the diaphragm L forces the valve f upward, closing the steamport gon the under side, and holding it tightly until the cylinderAis filledwith water through the suction-pipe N, (as shown in Fig. 2 by arrows cand Then the valve f by its own gravity and the pressure of the steamupon it, falls again, leaving a clear opening for the steam to passthrough the steam-port g into the cylinder A.

I claim as my invention- 1. The combination, in a steam vacuumpump, ofthe iioat B, hollow rod 0r tube C, wire rod d, and 4valves c g, arrangedand operatin g substantially a-s herein shown and dey scribed.

2. The combination, in a steam vacuumpump, of the floating valve b, tubeH, injection-pipe K, suction-pipe N, and chamber A, all arrangedsubstantially as and for the purpose set forth.

3. In a steam vacuum-pump, I claim the Combination of the float B,hollow rod or tube C, Wire rod d, diaphragm L and valves e g, chamber A,float- Valve b, tube H, and inj eetion and suction-pipes K N, allarranged and operating substantially as herein shown and set forth. Y

In testimony that I claim the foregoing I have hereunto set my hand andaffixed my seal this 6th day of November, A. D. 1871. JAMES M. MOREHEAD.[L SJ In presence of- LoUIs W. TRosT, CHARLES G. 00E.

